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Introduction to Linux - A Hands on Guide

This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.

All worked well until I had to swap monitors from a 17" LCD to a 17" CRT monitor. Since then when I boot I can hear X loading, but I can't see it. The screen goes blank. I can Ctrl Alt Tab F2 which takes me to a CLI, but no X. On the blank screen where I should be seeing X I can even type in the username and password and hear it accepting it.

I changed the runlevel from 5 to 3 but when it boots is says that the -F Option is disabled and so the runlevel change made no difference.

You need to reconfigure X and enter new monitor settings...Do you have the monitor manual? If you do, login in console mode, open /etc/X11/XF86Config-4 in any text editor (it you have mc installed it may be the editor from mc). Find 'Section "Monitor"'. You need to modify HorizSync and VertRefresh lines. The values are in your manual - usually at the beginning or at the end of it.

I am having the same exact problem also in RH9. My old monitor went up in smoke last night so I had to get a new one! However, I'm not sure the above solution will work for me. If I go to /etc/X11/ , I find XF86Config, but not XF86Config-4 as mentioned above. If I try to run XF86Config, I get a "command not found" error. What is going on?